1. Applications of Exponential and Logarithmic Functions Investment An amount of $7250 is invested at 6.5%, compounded monthly. How long will it take to have an accumulated amount of $15,000?

2. Applications of Exponential and Logarithmic Functions Depreciation The value of an earth mover is given by t = years C = original cost n = life expectancy V(t) = value at time t If the cost of the earth mover is $50,000 and the life expectancy is 20 years, how long will it take for the machine to be worth only $20,000?

3. Newton’s Law of Cooling t= time T 0 = initial temperature T= final temperature C= temperature of medium k= constant A bottle of juice at 70 degrees is left in a refrigerator which is 45 degrees. Ten minutes later, the bottle of juice is 55 degrees. a) What is the temperature of the juice after 15 minutes? b) When will the temperature of the juice be 50 degrees?